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Ground state vertex operator in superstring theory

In Tongs' "String Theory" lectures chapters 5.4.1-5.4.2 Tong referred to alternative way to find the mass of the different string states using suitable operators, and then integrating the ...
Daniel Vainshtein's user avatar
5 votes
0 answers
382 views

Spin-2 operators from metric fluctuations in the AdS/CFT

This is a computational question. I am pretty sure that there is a simple explanation, and something obvious that I am missing but I cannot figure it out. I want to add that this is not meant to be a &...
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3 votes
1 answer
1k views

Relationship between scaling dimension and mass in AdS/CFT

I've been reading Horatiu Nastase's notes on AdS/CFT, but I was confused about a certain relationship he claimed. If we compactify supergravity on $AdS_5\times S^5$, we may expand the fields in Kaluza-...
arow257's user avatar
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2 votes
0 answers
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Holographic duals of (super)gravity sigma models

Consider a (super)gravity theory on asymptotically AdS spacetime $N$ with fixed conformal boundary $\partial N$ coupled to scalars $\phi_i$ taking values in a manifold $M$, possibly in addition to ...
Arpan Saha's user avatar
2 votes
1 answer
214 views

Understanding Moonshine via Heterotic $\rm E_8\times E_8$ (resubmitted, originally asked on mathematics stack exchange)

Recently I have become familiar with the conjectured relationship of monstrous moonshine and pure (2+1)-dimensional quantum gravity in AdS with maximally negative cosmological constant and, it’s being ...
alex sharma's user avatar
2 votes
0 answers
86 views

What is the origin of the five-form field in bubbling Ads geometries?

I have been reading the paper: Bubbling Ads space and the 1/2 BPS geometries[hep-th/0409174]. In the paper they look at 1/2 BPS states in the field theory which are dual to D3 branes IIB supegravity. ...
Kay Modikai's user avatar
7 votes
1 answer
1k views

In AdS/CFT, what is on the AdS side, supergravity or string theory?

What really is on the AdS side in AdS/CFT? Does it always have to be string theory or is sometimes supergravity "enough" or better suited to do calculations? From the answers to my earlier ...
Dilaton's user avatar
  • 9,691
6 votes
2 answers
392 views

Significance of massive states in string theory

A free superstring has an infinite tower of states with increasing mass. The massless states correspond to the fields of the corresponding SUGRA. In "Quantum Fields and Strings: A Course for ...
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